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samba-users: [Samba] Oplocks - when do they help

[Samba] Oplocks - when do they help

From: Uri Simchoni <uri_simchoni_at_nospam>
Date: Sat May 22 2010 - 15:21:52 GMT
To: <>


I googled around and the general wisdom seems to be that oplocks provide a performance gain if files are accessed by a single client at a time (that is, if the oplock does not break).

What I can't figure out is what test can show this performance gain. I mean, theoretically, document-editing applications (Word,excel) save and load whole files and hence do not benefit from oplocks. Applications which do modify portions of a file usually flush buffers to maintain transactional integrity and hence should not benefit from oplocks either.

So, how can I demonstrate the benefit of oplocks?


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